How does the IP Subnet Calculator work?

Calculate subnet mask, host count, and network size from CIDR. The tool calculates an estimate from the values entered.

Can I copy the result?

Yes. Use the Copy Result button to copy the current result summary.

Technology

Calculate subnet mask, host count, and network size from CIDR.

Primary Result -

Secondary Result -

Additional Result -

Formula

Result is calculated from the entered values using the standard formula for this calculator type.

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